But undigested proteins aren't fermented by yeasts, they putrefy in the gut (are attacked by anaerobic bacteria). Many of the waste products of anaerobic putrefaction are highly toxic and evil smelling; when these toxins are absorbed through the small or large intestines they are very irritating to the mucous membranes, frequently contributing to or causing cancer of the colon. Protein putrefaction may even cause psychotic symptoms in some individuals. Meat eaters often have a very unpleasant body odor even when they are not releasing intestinal gasses. Adding a heavy toxic burden from misdigested foods to the normal toxic load a body already has to handle creates a myriad of unpleasant symptoms, and greatly shortens life. But misdigestion also carries with it a double whammy; fermenting and/or putrefying foods immediately interfere with the functioning of another vital organ--the large intestine--and cause constipation. Most people don't know what the word constipation really means. Not being able to move one's bowels is only the most elementary type of constipation. A more accurate definition of constipation is "the retention of waste products in the large intestine beyond the time that is conducive to health." Properly digested food is not sticky and exits the large intestine quickly. But improperly digested food (or indigestible food) gradually coats the large intestine, making an ever-thicker lining that interferes with the intestine's functioning. Far worse, this coating steadily putrefies, creating additional highly-potent toxins. Lining the colon with undigested food can be compared to the mineral deposits filling in the inside of an old water pipe, gradually choking off the flow. In the colon, this deposit can become rock-hard, just like water pipe scale. Since the large intestine is also an organ that removes moisture and water-soluble minerals from the food and moves them into the blood stream, when the large intestine is lined with putrefying undigested food waste, the toxins of this putrefaction are also steadily moved into the bloodstream and place an even greater burden on the liver and kidneys, accelerating their breakdown, accelerating the aging process and contributing to a lot of interesting and unpleasant symptoms that keep doctors busy and financially solvent. I'll have quite a bit more to say about colon cleansing later. The Progress Of Disease: Irritation, Enervation, Toxemia Disease routinely lies at the end of a three-part chain that goes: irritation or sub-clinical malnutrition, enervation, toxemia. Irritations are something the person does to themselves or something that happens around them. Stresses, in other words.